Without directly asking them, how do you find out if someone is looking to date?

I ask this cause I met a super cool woman a couple weeks ago. She’s been on vacation for the last weeks and a half. When she gets back, I asked if she would like to golf with my friends and I and she would be down. This is one of her hobbies. She friended me on IG, I checked her page out, there’s no signs of past relationships on her page. She’s 35but had the energy of a 25 year old. She mentions she’s “family first” on her page. She seems like such a catch that I’m surprised she’s not seeing anyone, is it possible that maybe she’s content being single and just having fun? How can I go about finding this out with being weird?
Without directly asking them, how do you find out if someone is looking to date?
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